[INFO] fetching crate tophat 0.3.0...
[INFO] testing tophat-0.3.0 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate tophat 0.3.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate tophat 0.3.0 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tophat 0.3.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate tophat 0.3.0
[INFO] tweaked toml for crates.io crate tophat 0.3.0 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate crates.io crate tophat 0.3.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3fcdd2671dca11a0f60e830b8f26805e30c5407a5b71a1965a7ef6dc34abe089
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "3fcdd2671dca11a0f60e830b8f26805e30c5407a5b71a1965a7ef6dc34abe089", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3fcdd2671dca11a0f60e830b8f26805e30c5407a5b71a1965a7ef6dc34abe089", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3fcdd2671dca11a0f60e830b8f26805e30c5407a5b71a1965a7ef6dc34abe089", kill_on_drop: false }`
[INFO] [stdout] 3fcdd2671dca11a0f60e830b8f26805e30c5407a5b71a1965a7ef6dc34abe089
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 283e97e021b4ea44538b4ab066b95dde0e1f50e2be36e769c2edde743675c252
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "283e97e021b4ea44538b4ab066b95dde0e1f50e2be36e769c2edde743675c252", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.56
[INFO] [stderr]    Compiling futures-channel v0.3.8
[INFO] [stderr]    Compiling pin-project-internal v1.0.2
[INFO] [stderr]    Compiling tracing-attributes v0.1.11
[INFO] [stderr]    Compiling futures-macro v0.3.8
[INFO] [stderr]    Compiling tracing v0.1.22
[INFO] [stderr]    Compiling pin-project v1.0.2
[INFO] [stderr]    Compiling futures-util v0.3.8
[INFO] [stderr]    Compiling tophat v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 37.49s
[INFO] running `Command { std: "docker" "inspect" "283e97e021b4ea44538b4ab066b95dde0e1f50e2be36e769c2edde743675c252", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "283e97e021b4ea44538b4ab066b95dde0e1f50e2be36e769c2edde743675c252", kill_on_drop: false }`
[INFO] [stdout] 283e97e021b4ea44538b4ab066b95dde0e1f50e2be36e769c2edde743675c252
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e89e3c9e8bfd29ba8360a9680680fa7ee6e515ed6d1beb68c47b2f24430c7f99
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "e89e3c9e8bfd29ba8360a9680680fa7ee6e515ed6d1beb68c47b2f24430c7f99", kill_on_drop: false }`
[INFO] [stderr]    Compiling smallvec v1.5.1
[INFO] [stderr]    Compiling easy-parallel v3.1.0
[INFO] [stderr]    Compiling sharded-slab v0.1.0
[INFO] [stderr]    Compiling regex v1.4.2
[INFO] [stderr]    Compiling polling v2.0.2
[INFO] [stderr]    Compiling regex-automata v0.1.9
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]    Compiling async-fs v1.5.0
[INFO] [stderr]    Compiling futures-executor v0.3.8
[INFO] [stderr]    Compiling futures v0.3.8
[INFO] [stderr]    Compiling async-io v1.3.1
[INFO] [stderr]    Compiling async-process v1.0.1
[INFO] [stderr]    Compiling async-net v1.5.0
[INFO] [stderr]    Compiling matchers v0.0.1
[INFO] [stderr]    Compiling smol v1.2.5
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]    Compiling tracing-serde v0.1.2
[INFO] [stderr]    Compiling serde_json v1.0.61
[INFO] [stderr]    Compiling tracing-subscriber v0.2.15
[INFO] [stderr]    Compiling tophat v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not compile `tophat`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name server_error_handling --edition=2018 tests/server_error_handling.rs --error-format=json --json=diagnostic-rendered-ansi --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 --test --cfg 'feature="default"' -C metadata=20d38bd34f4ad577 -C extra-filename=-20d38bd34f4ad577 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern async_channel=/opt/rustwide/target/debug/deps/libasync_channel-b5915acfebae8fb3.rlib --extern async_dup=/opt/rustwide/target/debug/deps/libasync_dup-05386a9cfbbc8248.rlib --extern byte_pool=/opt/rustwide/target/debug/deps/libbyte_pool-2c6f307868ca057a.rlib --extern easy_parallel=/opt/rustwide/target/debug/deps/libeasy_parallel-c57d95eaebb5b804.rlib --extern futures=/opt/rustwide/target/debug/deps/libfutures-35722e17e988c7f9.rlib --extern futures_lite=/opt/rustwide/target/debug/deps/libfutures_lite-34db83a235f3339c.rlib --extern futures_timer=/opt/rustwide/target/debug/deps/libfutures_timer-9cb13532640498b4.rlib --extern futures_util=/opt/rustwide/target/debug/deps/libfutures_util-dee8554d18f0a313.rlib --extern http=/opt/rustwide/target/debug/deps/libhttp-8ad66954887d631f.rlib --extern httparse=/opt/rustwide/target/debug/deps/libhttparse-4498e44828a5bbeb.rlib --extern httpdate=/opt/rustwide/target/debug/deps/libhttpdate-ba4bc36f56957a5b.rlib --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-b2d06f7d60fcbb27.rlib --extern num_cpus=/opt/rustwide/target/debug/deps/libnum_cpus-bb6d77f1917f6236.rlib --extern pin_project_lite=/opt/rustwide/target/debug/deps/libpin_project_lite-401cff4b7fa21e36.rlib --extern smol=/opt/rustwide/target/debug/deps/libsmol-03ddcc6733a778d5.rlib --extern tophat=/opt/rustwide/target/debug/deps/libtophat-ef31db59cf67bbac.rlib --extern tracing=/opt/rustwide/target/debug/deps/libtracing-783fb9aa0e158feb.rlib --extern tracing_subscriber=/opt/rustwide/target/debug/deps/libtracing_subscriber-6c76cc81c97e01e9.rlib --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "e89e3c9e8bfd29ba8360a9680680fa7ee6e515ed6d1beb68c47b2f24430c7f99", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e89e3c9e8bfd29ba8360a9680680fa7ee6e515ed6d1beb68c47b2f24430c7f99", kill_on_drop: false }`
[INFO] [stdout] e89e3c9e8bfd29ba8360a9680680fa7ee6e515ed6d1beb68c47b2f24430c7f99